Safety belt for vehicle, and vehicle occupant safety system, vehicle seat and vehicle having such safety belt

Abstract

The invention relates to a safety belt (1) for a vehicle, in particular a multi-track motor vehicle, comprising a belt element (10), which has at least one belt section (11), which extends between a bolt (13) for a belt lock (22) and an end fitting (22) and carries an airbag assembly (30) having an inflatable airbag. The invention is characterized in that a centering device (40) is provided, the airbag assembly (30) being mounted on the belt section (11) in a longitudinally displaceable manner and the position of the airbag assembly (30) relative to the belt section (11) being adjustable by means of the centering device (40).

Description

Technical Field

[0001] This invention relates to a seat belt for vehicles, particularly for multi-track motor vehicles, as described in the preamble of claim 1. Furthermore, this invention relates to a vehicle occupant safety system, a vehicle seat, and a vehicle incorporating such a seat belt. Background Technology

[0002] Seat belts of the type described at the beginning are known, for example, by EP 1 479 570 B1. This known seat belt includes a belt element having a lap belt section, on which an airbag assembly is securely fastened. The airbag assembly carries an inflatable airbag, which forms a vehicle occupant safety device as an airbag.

[0003] With the development of new-generation vehicle types, the demand for seat belts with integrated airbag components is increasing. Particularly, the development of vehicles with autonomous driving capabilities enables new interior space geometries, thereby eliminating the typical arrangement of vehicle seats. In particular, it is anticipated that in future generations of vehicles, for example, the steering wheel may be eliminated as the vehicle moves autonomously. However, this eliminates the possibility of effectively protecting vehicle occupants by installing airbags or airbag components in this way. For example, in the case of an airbag component in the steering wheel, the steering wheel serves as a support for the airbag component or inflated airbag. A similar situation applies to airbag components installed in the dashboard on the passenger side of the vehicle.

[0004] For the function of an airbag assembly or the airbag contained therein, it is important that the airbag is correctly positioned relative to the vehicle occupants when it deploys. In previous airbag assemblies integrated into the dashboard or steering wheel, this correct positioning was easily ensured by the arrangement of the seats and dashboard. However, for airbag assemblies mounted on seat belts, this correct positioning cannot always be guaranteed because the lap belt section where the airbag assembly is mounted varies in length depending on the size of the vehicle occupant. This results in: for some vehicle occupants, the airbag assembly is not precisely centered; for stronger individuals, it moves towards the end fittings of the seat belt. For thinner individuals, the airbag assembly rests more against the latch. However, in both cases, the airbag does not inflate centered in front of the vehicle occupant, thus failing to safely restrain the occupant. Summary of the Invention

[0005] In this regard, an object of the present invention is to provide a seat belt for a vehicle that provides substantially equivalent protection for people of different body types by means of an airbag assembly mounted on the seat belt. Another object of the present invention is to provide a vehicle occupant safety system, a vehicle seat, and a vehicle incorporating such a seat belt.

[0006] According to the present invention, the objective is achieved in terms of seat belts by the technical solution of claim 1, in terms of vehicle occupant safety systems by the technical solution of claim 12, in terms of vehicle seats by the technical solution of claim 13, and in terms of vehicles by the technical solution of claim 15.

[0007] Therefore, the present invention is specifically based on the concept of providing a seat belt for vehicles, particularly multi-lane motor vehicles, having a belt element having at least one lap belt section extending between a locking tongue and end fittings and carrying an airbag assembly with an inflatable airbag. The invention is characterized by a centering device, wherein the airbag assembly is longitudinally movably supported on the lap belt section and the position of the airbag assembly relative to the lap belt section is adjustable via the centering device.

[0008] Therefore, in this invention, the airbag assembly is not rigidly fixed to the lap belt section, but rather arranged to move longitudinally. In this respect, the airbag assembly is slidably connected to the lap belt section, making the position of the airbag assembly relative to the lap belt section changeable or adjustable. This has the advantage that the centering orientation of the airbag assembly is achieved independently of the size of the vehicle occupant to be protected through the centering device. This expands the application possibilities of this seatbelt, particularly regarding different vehicle occupants. Thus, for example, children or smaller individuals can be protected in the same way as larger or heavier individuals.

[0009] Typically, the position of the airbag assembly can be adjusted using a manually operable centering device. In this regard, the centering device may include an indicator indicating the correct position of the airbag assembly relative to the lap belt section. The position of the airbag assembly can then be manually adjusted, with the indicator showing the vehicle occupants when the correct position has been reached. Manual positioning of the airbag assembly relative to the lap belt section can also be supported by arranging disturbance contours on the airbag assembly, these contours being configured such that when the airbag assembly is not correctly positioned, the disturbance contours trigger a disturbing sensation in the vehicle occupants. The disturbance contours do not interfere with the comfort of the vehicle occupants only when they are in the correct position relative to the lap belt section and / or relative to the vehicle occupants. It can also typically be specified that sensors monitor the position of the airbag assembly relative to the lap belt section and / or relative to the vehicle occupants, and issue an alarm signal, such as an audible alarm, when the airbag assembly is not correctly positioned.

[0010] However, in a particularly preferred embodiment of the invention, the centering device has two tension spring-elastic compensating elements, wherein the airbag assembly is connected to the latch on one side and to the end fitting on the other side via the compensating elements. The tension spring-elastic compensating elements here automatically center the airbag assembly between the latch and the end fitting, thereby centering the airbag assembly relative to the corresponding vehicle occupant. However, when oriented, the airbag moves along the lap belt section, thereby adjusting the position of the airbag relative to the lap belt section.

[0011] In this regard, it is particularly preferred that the compensating elements have the same spring constant. The compensating elements are stretchable due to the elasticity of their tensile springs and can therefore be adapted to the physique of the corresponding vehicle occupant. The same spring constant ensures that the distances between the end fittings and the airbag assembly and between the latch and the airbag assembly are substantially equal. Therefore, the airbag assembly can be automatically centered relative to the vehicle occupant, regardless of the length of the belt segment adapted to the occupant's physique.

[0012] At least one of the compensating elements may have a helical tension spring or, in particular, an elastic belt or rope. The belt may, in particular, be a rubber belt. It is also possible that two compensating elements have helical tension springs and / or belts or ropes. In particular, the compensating elements may be configured to be identical.

[0013] In one variant, the compensating element may be specified as having a helical tension spring and a rope. The elastic properties of the tension spring are provided here by the helical tension spring. The rope can essentially serve as a tensile element in establishing a connection between the helical tension spring and the airbag assembly. In this regard, it is preferred that the helical tension spring be connected to an end fitting or latch, particularly a direct connection. This has the advantage that the helical tension spring is not located in the central area of ​​the lap belt section, which could potentially reduce the comfort of the vehicle occupants. Instead, a preferred rope or strap is arranged in this area, which, due to its flexibility, fits well with the belt element and therefore hardly hinders the comfort of the vehicle occupants.

[0014] Another variation specifies that the compensating element is formed of an elastic band, particularly a rubber band, extending between the end fittings and the airbag assembly, or between the latch and the airbag assembly. The advantage of an elastic band is that, due to its flexibility, it fits well into the belt element and therefore hardly hinders the comfort of the vehicle occupants. In contrast, using a coiled tension spring may allow for a greater spring force to be applied to the airbag assembly, thereby achieving improved centering. Both variations have their advantages and can be used as appropriate. Here, depending on the corresponding vehicle design, those skilled in the art will choose whether the seat belt should be equipped with a coiled tension spring and / or an elastic band, particularly a rubber band.

[0015] Where necessary, it is particularly preferred that the helical tension spring is connected to an end fitting or latch on one side and to the strap, particularly a rubber strap, or a rope on the other side, wherein the strap or rope is connected to the airbag assembly. This design has proven particularly advantageous in practice because a relatively high spring force can be achieved in this way with the helical tension spring, which reliably centers the airbag assembly relative to the vehicle occupants. At the same time, the helical tension spring is positioned in an area that hardly or even does not impede the comfort of the vehicle occupants.

[0016] To protect the compensating element and reduce the risk of injury from direct contact with it, an advantageous embodiment of the invention specifies that the compensating element and the airbag assembly are arranged within a common, particularly elastic, airbag sleeve. The airbag sleeve can be formed, for example, from textiles and has a correspondingly high degree of flexibility, thus adapting well to the corresponding length of the compensating element. Advantageously, the airbag sleeve also possesses a degree of elasticity such that almost no wrinkles form within it when the distance between the airbag assembly and the end fitting, or between the airbag assembly and the latch, is shortened. In this regard, a rubber elastic element can be incorporated into the airbag sleeve, allowing it to stretch as the distance between the end fitting and the airbag assembly, or between the latch and the airbag assembly, increases.

[0017] In another embodiment of the invention, the compensating elements are integrated into the airbag sleeve such that the lateral, resilient end sections of the airbag sleeve each form a compensating element. Thus, the airbag sleeve itself, with its lateral end sections, ensures the airbag assembly is centered along the waistband section. In this case, it is particularly preferred that the waistband section also extends through the airbag sleeve, allowing the airbag assembly to move along the waistband section. The airbag assembly can, for example, be securely attached to the airbag sleeve, with the waistband section loosely arranged within it. Therefore, the airbag can move along the waistband section due to the elasticity of the end sections of the airbag sleeve. In this respect, it is particularly preferred that the first resilient end section of the airbag sleeve is connected to an end fitting and the second resilient end section of the airbag sleeve is connected to a latch.

[0018] Typically, the distance between the end fitting and the latch, i.e., the length of the lap belt section, is determined by the physique of the vehicle occupant, particularly their girth. By connecting a compensating element to the end fitting and the airbag assembly, and a second compensating element to the latch and the airbag assembly, the airbag assembly self-centers along the lap belt section. Regardless of the length of the lap belt section, the airbag assembly is thus centered relative to the vehicle occupant and fully realizes its safety function.

[0019] To avoid negatively hindering the flexibility of the seatbelt, it is particularly preferred that the gas generator for the airbag assembly is positioned outside the seatbelt. In this regard, a preferred embodiment of the invention specifies that the airbag has a hose-like connector for a fluid-tight connection to the gas generator. Specifically, the hose-like connector can be a filling hose that can be connected to the gas generator. Therefore, gas generated in the gas generator is guided to the airbag via the filling hose and the hose-like connector, causing the airbag to inflate due to the inflow of gas.

[0020] Typically, seat belts can be configured as either a lap belt, also known as a two-point belt, or a three-point belt. In a three-point belt design, the belt element includes a chest belt section extending between the belt retractor and the latch, in addition to the lap belt section. The length of the chest belt section, like the lap belt section, is preferably variable, allowing the three-point belt to be adapted to the physique of the vehicle occupant.

[0021] In particular, the latch can be arranged to move longitudinally along the belt element and divide the belt element into a waist belt section and a chest belt section.

[0022] In another variation of the invention, the centering device may be formed by a crotch strap, which is connected to the airbag assembly and can be connected to the seat frame. Specifically, the crotch strap can be connected to the airbag sleeve. In particular, the crotch strap can be positioned such that it extends between the legs of the vehicle occupant, thus functioning essentially as a five-point crotch strap. Since the crotch strap is connected to the airbag assembly, which is movably supported along the lap belt section, automatic centering of the airbag assembly with respect to the lap belt section is achieved by connecting the crotch strap to the seat frame and guiding the crotch strap between the legs of the vehicle occupant.

[0023] A parallel aspect of the invention relates to a vehicle occupant safety system having the aforementioned seat belt. Furthermore, within the scope of this application, a vehicle seat for motor vehicles, particularly multi-track motor vehicles, is disclosed and claimed, having a seat frame and the aforementioned vehicle occupant safety system or the aforementioned seat belt. In the vehicle seat according to the invention, it is preferable to specify that the airbag is connected via a filling hose to a gas generator, which is secured to the seat frame. In particular, the seat frame may include a seating surface and a backrest. The backrest may be adjustable relative to the seating surface.

[0024] Furthermore, one aspect of the present invention relates to a vehicle, particularly a multi-track motor vehicle, having the vehicle seat described above, the vehicle occupant safety system described above, or the seat belt described above. Attached Figure Description

[0025] The present invention will now be explained in more detail with reference to the accompanying drawings and embodiments. In the drawings:

[0026] Figure 1 An exploded view of a seatbelt according to the invention, based on a preferred embodiment, is shown.

[0027] Figure 2 A schematic front view showing the seat belt according to the invention in operation;

[0028] Figure 3 A schematic diagram of the lap belt section of a seat belt according to the invention, according to another preferred embodiment, is shown;

[0029] Figure 4 An exploded view of a seatbelt according to the invention, based on another preferred embodiment, is shown;

[0030] Figure 5 A schematic front view of a seat belt according to another preferred embodiment is shown;

[0031] Figures 6a-6c Schematic front views are shown of the seat belt in the operating position according to the invention when the airbag assembly is in different positions. Detailed Implementation

[0032] exist Figure 1 The image shows a seat belt 1, which includes a belt element 10. The belt element 10 extends from a belt retractor 21 to an end fitting 22. A latch 13, which can be engaged with a belt lock, is movably arranged along the belt element 10. The latch 13 divides the belt element 10 into a lap belt section 11 and a chest belt section 12. Depending on the position of the latch 13, the length of either the lap belt section 11 or the chest belt section 12 varies. In particular, the length of the lap belt section 11 is adaptable to fit the physique of the vehicle occupant.

[0033] The seat belt 1 also includes an airbag assembly 30, which is longitudinally movably arranged on the lumbar belt section 11. The airbag assembly 30 is slidably supported on the lumbar belt section 11 such that the position of the airbag assembly 30 along the lumbar belt section 11 is variable.

[0034] The airbag assembly 30 includes an airbag 35, which is fluid-tightly connected to a filling hose 32 via a hose-type connector 36. For this purpose, the end section of the filling hose 32 is inserted into the hose-type connector 35 and secured there by means of a retaining ring 33 in a force-locking and / or form-locking, but at least fluid-tight, manner. The filling hose 32 fluid-tightly connects the airbag assembly 30 to a gas generator 31, which is preferably secured separately from the seat belt 1 in the vehicle. For example, the gas generator 31 may be secured to the seat frame 20.

[0035] According to Figure 1The exploded view also shows a gas distributor 34, which is essentially configured as a tubular element. The gas distributor 34 may have one or more gas outlet openings and preferably extends within the airbag assembly 30. In particular, the gas distributor 34 can extend from a hose-type connector 36 into the airbag 35 and thus uniformly distribute the gas generated in the gas generator 31 and guided to the airbag assembly 30 via the filling hose 32 within the airbag 35. This ensures uniform opening of the airbag 35.

[0036] In accordance with Figure 1 In this embodiment, the seat belt 1 has a centering device 40 formed by an elastic band, particularly a rubber band 47. The airbag assembly 30 is connected to the end fitting 22 on one side and to the latch 13 on the other side by at least one rubber band. The rubber band 47 forms a compensation element 41 that causes length compensation.

[0037] Specifically, in accordance with Figure 1 In this embodiment, two rubber bands 47 are provided to connect the airbag assembly 30 to the latch 13. Here, the rubber bands 47 can be directly connected to the latch 13. Additionally, two additional rubber bands 47 are provided to connect the airbag assembly 30 to a fastening element 48. The fastening element 48 is preferably securely connected to the end fitting 22. Therefore, the rubber bands 47 connect the end fitting 22 to the airbag assembly 30.

[0038] An airbag sleeve 44 is provided to protect the compensating element 41 or the rubber band 47. The airbag sleeve 44 preferably surrounds the compensating element 41 or the rubber band 47 and the airbag assembly 30. The airbag sleeve 44 may be formed of a textile material. Alternatively, the airbag sleeve 44 may itself have elastic properties.

[0039] The elastic properties of the compensating element 41 ensure that the airbag assembly 30 is centered about the latch 13 and the end fitting 22. For this purpose, the compensating element 41, which has a tensile spring elasticity, has substantially the same spring constant. Within the scope of this application, the same spring constant is also referred to as the same elasticity. Even if the spring constants or elasticities differ from each other by up to 20%, they are considered the same in the sense of this application. In any case, the compensating element 41 applies preferably the same tension to the airbag assembly 30, thereby achieving the centered orientation of the airbag assembly 30 between the end fitting 22 and the latch 13 substantially regardless of the length of the belt section 11.

[0040] exist Figure 1 A schematic front view of the seat frame 20, including the seating surface 23 and the seat back 24, can be seen. (In accordance with...) Figure 2In this embodiment, the seat belt 1 is configured as a three-point belt and extends from the belt retractor 21 via a latch 13 to the end fitting 22. The latch 13 is movably arranged along the belt element 10 and divides the belt element into a chest belt section 12 and a lap belt section 11. The lap belt section 11 extends substantially on the seating surface 13, while the chest belt section 12 extends substantially diagonally on the seat back 24.

[0041] For clarity, in Figure 2 The centering device 40 is not shown. However, an airbag assembly 35 is shown, which is oriented substantially centrally between the end fitting 22 and the latch 13. The end fitting 22 and the latch receiving the latch 13 are preferably positioned such that when the airbag assembly 35 is oriented centrally along the lumbar belt section 11, the airbag assembly 30 is also oriented centrally relative to the seat frame 20. Figure 2 The diagram shows this centering orientation of the airbag assembly 30, and in particular the airbag 35.

[0042] Figure 2 Specifically, it shows the airbag 35 in an inflated state. It can be seen that, through this centered orientation, the airbag 35 effectively provides its protective function. An off-center arrangement of the airbag assembly 30 would result in the airbag 35 not deploying centered with respect to the seat frame 20, but rather laterally offset, for example, when the vehicle occupant has a body size larger or smaller than the standard. When the airbag 35 inflates, it will extend obliquely and can be arranged such that, if necessary, the vehicle occupant slides past the airbag 35, and therefore the airbag 35 provides no protection or only insufficient protection.

[0043] Figure 3 Another embodiment of the seatbelt 1 is shown, in which the illustrated belt element 10 is omitted for clarity. Only the end fitting 22 and the latch 13, and the airbag assembly 30 disposed between the end fitting 22 and the latch 13 are shown, which is connected to the end fitting 22 and the latch 13 via a centering device 40. The centering device 40 includes two compensating elements 41, wherein a first compensating element 41 connects the airbag assembly 30 to the end fitting 22 and a second compensating element 41 connects the airbag assembly 30 to the latch 20. In this embodiment, the compensating element 41 is formed by a combination of a rope 43 and a helical tension spring 42. Here, the helical tension spring 42 is directly connected to the end fitting 22 or the latch 13. The connection between the helical tension spring 42 and the airbag assembly 30 is achieved via the rope 43, respectively. The helical tension spring 42 and the rope 43 are preferably disposed in the airbag sleeve 44, respectively.

[0044] Rope 43 is preferably not elastic or flexurally elastic, at least not to a significant degree. Instead, it ensures that the spring force, or tension spring force, in the airbag assembly 30 is within the specified range. Figure 3In this embodiment, the pressure is applied by a helical tension spring 42. The helical tension spring 42 has the same spring constant for this purpose, such that the airbag assembly is automatically centered between the end fitting 22 and the latch 13.

[0045] Figure 4 Another embodiment of the seat belt 1 according to the invention is shown, wherein the seat belt 1 is similar in significant portions to that according to... Figure 1 The embodiment is configured as follows. In particular, the seat belt 1 has a belt element 10 that extends from the belt lock 21 to the end fitting 22. Here, the belt element 10 preferably passes through a belt passage 25, which can be fixed, for example, in the B-pillar of the vehicle. The belt element 10 also carries a belt lock 13, which is movable longitudinally along the belt element 10 and divides the belt element 10 into a lap belt section 11 and a chest belt section 12.

[0046] The airbag assembly 30 is longitudinally movably or slidably supported on the waist belt section 11, wherein the airbag assembly 30 includes an airbag 35 and a hose-type connector 36. A gas distributor 34 may also be arranged within the airbag assembly 30. The hose-type connector 36 is connected to a filling hose 32, which establishes a connection to a gas generator 31. The filling hose 32 is secured to the connector 36 via a retaining ring 33.

[0047] In accordance with Figure 4 In this embodiment, the centering device 40 is formed by a crotch strap 14, which is connected to the airbag assembly 30 on one side and to the crotch strap latch 15 on the other side. Specifically, the crotch strap 14 extends from the airbag assembly 30 to the crotch strap latch 15, which can be connected to a crotch strap lock, which can be arranged on the seat frame 20. Preferably, the crotch strap lock is fixed to the seat frame 20 or at least to its vicinity such that the crotch strap 14 extends between the legs of the vehicle occupant in the locked state. In this regard, the crotch strap 14 is formed, for example, by a five-point harness.

[0048] Because the airbag assembly 30 is slidably supported along the waist belt section 11, the connection between the crotch belt latch 15 and the crotch belt lock ensures that the airbag assembly 30 is centrally oriented between the end fitting 22 and the latch 13. Therefore, the airbag assembly 30 is correctly positioned to perform its protective function.

[0049] exist Figure 5 Another possible centering device 40 is shown in the figure. Figure 5A seat frame 20 with a seating surface 23 and a seat back 24 is shown in a front view. The seat back 24 may also support a headrest 26. The lap belt section 11 of the belt element 10 of the seat belt 1 extends laterally across the seating surface 23. The airbag assembly 30 is slidably, or longitudinally movable, supported on the lap belt section 11. Markings 49 serve as centering devices 40, and these markings should correspond (align) with corresponding additional markings on the seat frame 20 to pre-determine the correct position of the airbag assembly 30 for vehicle occupant safety.

[0050] Specifically, it can be stipulated that markings 49 are arranged on the seat frame 20 and on the airbag assembly 30, respectively, for alignment performed manually by the vehicle occupants. Therefore, the vehicle occupants need to align the markings 49 to ensure that the airbag assembly 30 is correctly positioned along the lap belt section 11.

[0051] It is also possible to monitor the consistency of the markings 49. For this purpose, sensors could be provided, for example, to detect the correct position of the airbag assembly 30 relative to the seat frame 20. Alternatively, the sensing mechanism could include video monitoring with corresponding digital image analysis, which identifies whether the markings 49 on the airbag assembly 30 and the seat frame 20 are aligned. In cases where there is no alignment, but a person is identified, for example, by a weight sensor on the seat frame 20 or the seating surface 23, an alarm sound can be triggered to indicate a defective position of the airbag assembly 30.

[0052] Figures 6a-6c This illustrates another possibility for the artificial centering airbag assembly 30. Figures 6a-6c The image shows a seat frame 20 including a seat back 24 and a seating surface 23. A three-point seat belt 1 extends from the seat frame 20. The seat belt 1 includes a belt retractor 21 and an end fitting 22, wherein the belt element 10 of the seat belt 1 extends from the belt retractor 21 via a latch 13 to the end fitting 22. The latch 13 divides the belt element into a lap belt section 11 and a chest belt section 12. A [missing information - likely a device or structure] is arranged in the lap belt section 11. Figures 6a-6c The airbag assembly 30 of the airbag 35 is shown in an inflated state.

[0053] To allow vehicle occupants to move and orient the airbag assembly 35 centrally between the end fitting 22 and the latch 13, an interference profile 37 is provided on the airbag assembly 30 or on the airbag 35. The interference profile 37 is designed such that it creates an uncomfortable wearing sensation when the airbag assembly 30 is eccentrically oriented. Therefore, vehicle occupants experience discomfort when the airbag assembly is not centrally oriented.

[0054] Figure 6aAn example is shown where the airbag assembly 30 is positioned closer to the end fitting 22. In this orientation, the interference profile 37 can, for example, apply pressure to the thigh or pelvis of a vehicle occupant, causing the occupant to feel compelled to move the airbag assembly 30 along the lap belt section 11, preferably until it moves in accordance with... Figure 6b In the position. If the vehicle occupants move the airbag assembly more than 30 degrees, according to Figure 6b The position, for example, until according to Figure 6c In this position, the interference contours 37 function in this way again, causing them to hinder the wearing comfort of the seatbelt 1. In other words, even when following the... Figure 6c In this position, seatbelt 1 is also uncomfortable to wear, as the interference profile 37 can, for example, press into the thighs or pelvis of the vehicle occupant. Only when in accordance with... Figure 6b In a position where the disturbance profile 37 is oriented substantially uniformly on the body of the vehicle occupant, the disturbance profile 37 does not trigger a disturbing or uncomfortable sensation.

[0055] Figure Labels

[0056] 1. Seat belt

[0057] 10 with components

[0058] 11 belt sections

[0059] 12 chest band sections

[0060] 13 Locking Tongue

[0061] 14 hip belt

[0062] 15. Hip lock tongue

[0063] 20 seat racks

[0064] 21-belt retractor

[0065] 22 end accessories

[0066] 23 seats

[0067] 24 seat backrests

[0068] 25 belts pass through the section

[0069] 26 headrests

[0070] 30 airbag components

[0071] 31 Gas Generator

[0072] 32 Filler Tube

[0073] 33 retaining ring

[0074] 34 Gas Distributor

[0075] 35 airbags

[0076] 36 connectors

[0077] 37 Interference Profile

[0078] 40 centering devices

[0079] 41 Compensation Components

[0080] 42 helical tension spring

[0081] 43 ropes

[0082] 44 airbag covers

[0083] 47 rubber belt

[0084] 48 Fastening Components

[0085] 49 marks

Claims

1. A seat belt (1) for vehicles, particularly multi-track motor vehicles, having a belt element (10) having at least one lap belt section (11) extending between a latch (13) for a lock (22) and an end fitting (22) and carrying an airbag assembly (30) having an inflatable airbag. Its features are, A centering device (40) is provided, wherein the airbag assembly (30) is longitudinally movably supported on the waist belt section (11) and the position of the airbag assembly (30) relative to the waist belt section (11) can be adjusted by the centering device (40).

2. The seat belt (1) according to claim 1. Its features are, The centering device (40) has two tension spring elastic compensation elements (41), wherein the airbag assembly (30) is connected to the latch (13) on one side and to the end fitting (22) on the other side via the compensation elements (41).

3. The seat belt (1) according to claim 2. Its features are, The compensation element (41) has the same spring constant.

4. The seat belt (1) according to any one of the preceding claims. Its features are, At least one compensating element (41) has a helical tension spring (42) and / or – particularly elastic – a belt, particularly a rubber belt (47) or a rope (42).

5. The seat belt (1) according to claim 4. Its features are, The helical tension spring (42) is connected on one side to an end fitting (22) or a latch (13) and on the other side to the belt, particularly the rubber belt (47) or the rope (43), wherein the belt or the rope (43) is connected to the airbag assembly (30).

6. The seat belt (1) according to any one of the preceding claims. Its features are, The compensation element (41) and the airbag assembly (30) are arranged in a common, particularly elastic, airbag sleeve (44).

7. The seat belt (1) according to claim 6. Its features are, The compensation element (41) is integrated into the airbag sleeve (44) such that the lateral, elastic end sections of the airbag sleeve (44) respectively form the compensation element (41), in particular the elastic first end section is connected to the end fitting (22) and the elastic second end section is connected to the latch (13).

8. The seat belt (1) according to any one of the preceding claims. Its features are, The airbag has a hose-type connector (35) for fluid-tight connection to the gas generator (31), and in particular for the filling hose (32) of the gas generator (31).

9. The seat belt (1) according to any one of the preceding claims. Its features are, The safety belt (1) is configured as a lap belt or as a three-point belt.

10. The seat belt (1) according to any one of the preceding claims. Its features are, The latch (13) is movably positioned along the belt element (10) and divides the belt element (10) into the waist belt section (11) and the chest belt section (12).

11. The seat belt according to any one of the preceding claims, Its features are, The centering device (40) is formed by a crotch strap (14) which is connected to the airbag assembly (30) and can be connected to the seat frame (20).

12. A vehicle occupant safety system having a seat belt (1) as described in any one of the preceding claims.

13. A vehicle seat for motor vehicles, particularly multi-track motor vehicles, having a seat frame (20) and a vehicle occupant safety system or seat belt (1) according to any one of the preceding claims.

14. The vehicle seat according to claim 13, Its features are, The airbag is connected to a gas generator (31) via a filling hose (32), which is secured to the seat frame (20).

15. A vehicle, particularly a multi-track motor vehicle, having a vehicle seat, vehicle occupant safety system or seat belt as described in any one of the preceding claims (1).

Images